Number of 4 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 0 vertically.
A208370
Number of 4 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 0 vertically.
Terms
- a(0) =9a(1) =81a(2) =351a(3) =1953a(4) =9999a(5) =52821a(6) =275769a(7) =1446381a(8) =7572429a(9) =39673377a(10) =207796977a(11) =1088500725a(12) =5701622643a(13) =29865934989a(14) =156441006369a(15) =819457342785
External references
- oeis: A208370